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EP 3 577 771 A1

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(43) Date of publication: 11.12.2019 Bulletin 2019/50 (21) Application number: 18712483.9 (22) Date of filing: 21.02.2018

(51) International Patent Classification (IPC):  H04B 1/04(2006.01) H03F 3/195(2006.01) H03F 1/02(2006.01) H03F 3/24(2006.01) (86) International application number: PCT/PT2018/000003 (87) International publication number: WO 2018/160083 (07.09.2018 Gazette 2018/36)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD TN (30) Priority: 01.03.2017 US 201715446286 (71) Applicants: De Araújo Borges Montezuma De Carvalho, Paulo M. 1600-410 Lisboa (PT) Henriques Dias Morgado Dinis, Rui Miguel 2825-434 Costa da Caparica (PT) Beko, Marko 2610-183 Alfragide (PT) Martinho Lêdo Guerreiro, João Francisco 2925-599 V. N. Azeitão (PT) Germano Viegas, Pedro Miguel 2790-425 Linda-A-Pastora (PT)

(72) Inventors: De Araújo Borges Montezuma De Carvalho, Paulo M. 1600-410 Lisboa (PT) Henriques Dias Morgado Dinis, Rui Miguel 2825-434 Costa da Caparica (PT) Beko, Marko 2610-183 Alfragide (PT) Martinho Lêdo Guerreiro, João Francisco 2925-599 V. N. Azeitão (PT) Germano Viegas, Pedro Miguel 2790-425 Linda-A-Pastora (PT) (74) Representative: Patentree  Edificio Net Rua de Salazares, 842 4149-002 Porto 4149-002 Porto (PT)